446897021 has 4 divisors (see below), whose sum is σ = 453018972. Its totient is φ = 440775072.

The previous prime is 446896951. The next prime is 446897053. The reversal of 446897021 is 120798644.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196308121 + 250588900 = 14011^2 + 15830^2 .

It is a cyclic number.

It is not a de Polignac number, because 446897021 - 2¹⁰ = 446895997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 446897021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446897621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3060866 + ... + 3061011.

It is an arithmetic number, because the mean of its divisors is an integer number (113254743).

Almost surely, 2^446897021 is an apocalyptic number.

It is an amenable number.

446897021 is a deficient number, since it is larger than the sum of its proper divisors (6121951).

446897021 is an equidigital number, since it uses as much as digits as its factorization.

446897021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6121950.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 446897021 is about 21139.9390018041. The cubic root of 446897021 is about 764.5440038103.

The spelling of 446897021 in words is "four hundred forty-six million, eight hundred ninety-seven thousand, twenty-one".